EP3517710A1

EP3517710A1 - Improved reinforcement for a tent profile

Info

Publication number: EP3517710A1
Application number: EP18153308.4A
Authority: EP
Inventors: Erwin Broens; Katja De Waegenaere
Original assignee: European Future Structures Nv
Current assignee: European Future Structures Nv
Priority date: 2018-01-24
Filing date: 2018-01-24
Publication date: 2019-07-31
Also published as: WO2019145429A1

Abstract

The current invention concerns a modular construction system for a tent, a reinforcement profile for tent construction, and a method for tent construction. The modular construction system comprises a basis profile and one or more reinforcement profiles. The system is adapted to longitudinally, externally and removably attach the reinforcement profiles to the basis profile. A reinforcement profile and the basis profile comprise an attached configuration in which the reinforcement profile comprises a reinforcement wall spaced from the basis profile.

Description

Technical field

The invention pertains to the technical field of profiles, and in particular tent profiles, to which one or more reinforcements can be attached. The present invention may therefore pertain to structural elongated elements designed for load-supporting (IPC E04C3/00), typically of metal (IPC E04C3/04).

Background

DE 2 547 897 describes an extruded hollow girder, in which regions of high tensile stress are reinforced with high tensile strength strips inserted in a hollow slot of the girder and secured to the ends of the girder.
US 3 972 529 describes a tubular profile with recesses along the outer surface in which unidirectional graphite fiber reinforcement strips are applied.
US 6 647 692 discloses a support and connecting metal profile for large tent constructions, whereby the profile body is provided with fiber composite reinforcements and circular grooves opened towards the outside.
The above disclosed profiles have several shortcomings.
Profiles can be subject to substantial bending stress. Thereby one part of the profile can be subject to longitudinal compression, i.e. compression along the length of the profile, while another part can be subject to longitudinal stretch, i.e. stretch along the length of the profile. The reinforcements described above may help for stretch forces or tensile stress, but are not configured for compression. In addition, not all of the above profile reinforcements are configured uniformly to absorb forces from any direction perpendicular to the profile.
Furthermore, the reinforcements described above are permanently incorporated in the profiles. The profiles above are not adapted for easy attachment/detachment of the reinforcements. It may be desirable to adapt a profile on a case-by-case basis, whereby the reinforcement does not have to be shipped/sold for each use, but only when required. This would allow for material, transport weight, fuel and economic savings. In addition, the above profiles are not adapted for attachment/detachment of a reinforcement to the profile when part of a build-up tent framework.
The present invention aims to resolve at least some of the problems mentioned above.

Summary of the invention

In a first aspect, the present invention provides a modular construction system for a tent, according to claim 1.
In a second aspect, the present invention provides a reinforcement profile for tent construction, according to claim 12.
In a third aspect, the present invention provides a method for tent construction, according to claim 14.
The present invention is advantageous as the reinforcement profiles can be longitudinally, externally and removably attached to the basis profile, thereby yielding a reinforcement wall external to and spaced from the basis profile. The reinforcement wall thereby provides for reinforcement against both longitudinal compression as well as longitudinal stretch, and hence also against bending stress.
Further advantages, preferred embodiments, and examples are discussed in the detailed description below.

Brief description of the figures

Figures 1, 2 and 3 show cross sections of embodiments of basis profiles according to the present invention.
Figures 4, 5 , 6 and 7 show cross sections of embodiments of reinforcement profiles according to the present invention.
Figure 8 shows a cross section of an embodiment of a modular construction system according to the present invention, comprising a basis profile and four reinforcement profiles.
Figure 9 shows a perspective view of an embodiment of a modular construction system according to the present invention, comprising a basis profile and four reinforcement profiles.
Figure 10 shows a perspective view of an embodiment of a tent framework according to the present invention, in which two basis profiles are attached perpendicularly to a reinforced profile via connector pieces.

Detailed description of the invention

The present invention concerns a modular construction system for a tent, a reinforcement profile for tent construction, and a method for tent construction. The invention has been summarized above. In what follows, the invention is described in detail, preferred embodiments are discussed, and the invention is illustrated by means of examples.
Unless otherwise defined, all terms used in disclosing the invention, including technical and scientific terms, have the meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. By means of further guidance, term definitions are included to better appreciate the teaching of the present invention.
As used herein, the following terms have the following meanings:

"A", "an", and "the" as used herein refers to both singular and plural referents unless the context clearly dictates otherwise. By way of example, "a compartment" refers to one or more than one compartment.

"Comprise", "comprising", and "comprises" and "comprised of" as used herein are synonymous with "include", "including", "includes" or "contain", "containing", "contains" and are inclusive or open-ended terms that specifies the presence of what follows e.g. component and do not exclude or preclude the presence of additional, non-recited components, features, element, members, steps, known in the art or disclosed therein.
"Tent" as used herein refers to a structure which comprises a framework comprising a profile. The structure is preferably temporary, but may alternatively be permanent. The tent may further comprise elements for closing off the roof or walls of the tent for protection against wind and rain, such as, for example, a sheet of fabric, a canvas, a rigid panel, and the like.
"Profile" as used herein refers to a structural elongated element for load-supporting. A profile can be used as, for example, beam or column in, for example, a tent framework.
"Longitudinal" in conjunction with a profile or profile component refers to the length direction of the profile, i.e. the elongation direction, which in case of an extruded profile is also typically the extrusion direction. As used herein, "longitudinal" profile component and profile component "extending in the length direction of the profile" are synonymous. Furthermore, two "longitudinally" attached profiles comprise mutually in essence parallel length directions.
In a first aspect, the invention provides a modular construction system for a tent. The system comprises a basis profile and one or more reinforcement profiles. The system is adapted to longitudinally, externally and removably attach the reinforcement profiles to the basis profile. A reinforcement profile and the basis profile comprise an attached configuration in which the reinforcement profile comprises a reinforcement wall spaced from the basis profile.
In a second aspect, the invention provides a reinforcement profile for tent construction. The reinforcement profile comprises a length direction. The reinforcement profile further comprises a tangent wall, support walls and a reinforcement wall. The tangent, support and reinforcement walls are in essence parallel to the length direction. The reinforcement wall is spaced from the tangent wall by an air gap and said support walls.
In a third aspect, the invention provides a method for tent construction. A basis profile is provided. A reinforcement profile comprising a length direction, a tangent wall, support walls and a reinforcement wall is provided. The tangent, support and reinforcement walls are in essence parallel to the length direction. The reinforcement wall is spaced from the tangent wall by an air gap and said support walls. The method comprises the step of longitudinally, externally and removably attaching the reinforcement profile to the basis profile, thereby obtaining an attached configuration in which the reinforcement wall is spaced from the basis profile.
The present invention is advantageous as the reinforcement profiles can be longitudinally, externally and removably attached to the basis profile, thereby yielding a reinforcement wall external to and spaced from the basis profile. The reinforcement wall thereby provides for reinforcement against bending stress, i.e. reinforcement against both longitudinal compression as well as longitudinal stretch.
As opposed to internal attachment, external attachment is also less limited in space. More reinforcement profiles can be attached. The reinforcement profiles are not limited to the available internal space of the basis profile. External reinforcement profiles may furthermore be configured for layer-wise attachment, i.e. a first reinforcement profile may be externally attached to the basis profile, and a second reinforcement profile may be attached to the first reinforcement profile. To obtain sufficient strength with internal reinforcement profiles as opposed to external reinforcement profiles, more complicated designs, thicker walls and/or stronger materials are needed.
One of ordinary skill in the art will appreciate that the modular construction system according to the first aspect may comprise a reinforcement profile according to the second aspect. One of ordinary skill in the art will further also appreciate that the method according to the third aspect may pertain to a basis profile and a reinforcement profile of a modular construction system according to the first aspect. The three aspects of the present invention are therefore interrelated. In what follows, distinction between the different aspects may therefore be left out. The disclosure, embodiments and examples may relate to each of the three aspects of the present invention.
In a preferred embodiment, a reinforcement profile comprises a tangent wall, support walls, and a reinforcement wall. The reinforcement wall is spaced from the tangent wall by an air gap and said support walls. Thereby, the air gap lies in between said reinforcement, tangent and support walls. A reinforcement profile externally attached to the basis profile comprises a tangent wall in contact with the basis profile, i.e. in said attached configuration the tangent wall of the reinforcement profile is in contact with the basis profile. In that case, the support walls space the reinforcement wall from the basis profile.
A hollow reinforcement profile comprising an air gap in between the reinforcement wall and the tangent wall is advantageous over a massive reinforcement profile, as it requires less material than a massive reinforcement profile, while still providing sufficient reinforcement against bending stress. Less material has the further advantages of less weight and less economic cost, the latter both for manufacturing and for transport.
In a preferred embodiment, in said attached configuration the reinforcement wall of the reinforcement profile is spaced from the basis profile by a distance of at least 4 mm, preferably at least 6 mm, more preferably at least 8 mm, even more preferably at least 10 mm, yet even more preferably at least 12 mm, most preferably at least 14 mm, such as 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, or any value above or in between.
This is advantageous, as the further a reinforcement wall is positioned external to the basis profile, the more additional reinforcement it provides against bending stress. There is however a trade-off with the overall size of the reinforcement profile.
In a preferred embodiment, the basis and reinforcement profiles comprise a mutually in essence equal length along the length direction.
In a preferred embodiment, the basis profile comprises a plastic, a composite, a metal or an alloy, preferably a metal or an alloy, more preferably steel or aluminum, even more preferably aluminum. Most preferably, the basis profile is an aluminum profile. Aluminum is advantageous as it combines low weight with good strength characteristics.
In a preferred embodiment, the basis profile is manufactured by extrusion. In this case, the basis profile is an extruded profile. Preferably, the basis profile is an extruded metal profile, more preferably an extruded aluminum profile.
In a preferred embodiment, a reinforcement profile comprises a plastic, a composite, a metal or an alloy, preferably a metal or an alloy, more preferably steel or aluminum, even more preferably aluminum. Most preferably, the reinforcement profile is an aluminum profile. Aluminum is advantageous as it combines low weight with good strength characteristics.
In a preferred embodiment, a reinforcement profile is manufactured by extrusion. In this case, the reinforcement profile is an extruded profile. Preferably, the reinforcement profile is an extruded metal profile, more preferably an extruded aluminum profile.
In a preferred embodiment, the basis profile comprises one or more, preferably multiple, longitudinal connection recesses and each reinforcement profile comprises one or more, preferably at least two, longitudinal connection protrusions, whereby each connection protrusion is adapted to hook and slide in a connection recess of the basis profile. Preferably, the reinforcement wall of a reinforcement profile also comprises a connection recess, more preferably a longitudinal connection recess, even more preferably at least two longitudinal connection recesses. A non-limiting list of connection protrusions comprises a T-shaped connection protrusion, an L-shaped connection protrusion, a question-mark- or hook-shaped connection protrusion, an in essence cuboid head supported by a neck, and an in essence cylindrical head supported by a neck. Preferably, a connection protrusion comprises an in essence cylindrical head supported by a neck. Preferably, a connection recess is an in essence cylindrical cavity provided with a mouth. The cylindrical cavity is thereby open towards the outside of the profile via the mouth. An example of a connection recess which is an in essence cylindrical cavity provided with a mouth is a Keder rail. An example of a connection protrusion comprising an in essence cylindrical head supported by a neck is a Keder protrusion. This is advantageous as the connection recesses of the basis profile are adapted to attach a tent fabric as well as adapted to attach a reinforcement profile. A reinforcement profile comprising a reinforcement wall comprising connection recesses is advantageous as these connection recesses allow for attachment of other reinforcement profiles and/or attachment of a tent fabric.
In an alternative embodiment, an attachment system can be provided without said connection recesses and said connection protrusions, i.e. an attachment system which does not involve hooking and sliding of connection protrusions in connection recesses. The attachment system may involve the approach of a reinforcement profile towards the basis profile along a direction in essence perpendicular to the length direction, and the subsequent attachment of the reinforcement profile to the basis profile, for example via transversal fixation holes and elongated connection members, as described below.
In a preferred embodiment, the system comprises at least two, preferably at least three, and most preferably at least four reinforcement profiles. In this embodiment, the basis profile is adapted for attachment of the at least two, preferably at least three, and most preferably at least four reinforcement profiles to the basis profile. This is advantageous as it allows to reinforce the basis profile as needed, i.e. on the needed locations and/or against a particular magnitude of bending stress.
In a preferred embodiment, the basis profile comprises an in essence rectangular cross section. One of ordinary skill in the art will appreciate that said "in essence" rectangular cross section may allow for deviations from a perfect rectangular cross section, in particular for attachment recesses, such as said connection recesses for reinforcement profiles and/or other attachment recesses. An in essence rectangular cross section may also comprise rounded corners.
In a preferred embodiment, the tangent wall of a reinforcement profile comprises two in essence perpendicular wall segments. Both wall segments of the tangent wall of a reinforcement profile externally attached to the basis profile are thereby in contact with the basis profile, i.e. in said attached configuration both wall segments of the tangent wall are in contact with the basis profile. Preferably, the tangent wall comprises at least two connection protrusions. More preferably, the at least two connection protrusions are two longitudinal in essence cylindrical heads, i.e. in essence cylindrical heads extending in the length direction, each supported by a longitudinal neck, i.e. a neck extending in the length direction. Most preferably, each of said wall segments of said tangent wall comprises at least one of said connection protrusions. Preferably, the reinforcement wall comprises one or more longitudinal in essence cylindrical cavities each comprising a longitudinal mouth.
This is advantageous for several reasons. A single reinforcement profile thereby provides for reinforcement against bending stress in two mutually perpendicular transversal directions, both transversal directions perpendicular to the length direction. A reinforcement profile thereby further protects a corner as well as (part of) several sidewalls of the basis profile against accidental collision.
In a preferred embodiment, each of the basis and reinforcement profiles comprises a multitude of transversal fixation holes for relative fixation of the basis profile and a reinforcement profile by means of an elongated connection member. The transversal fixation holes are configured for insertion of the elongated connection member in a transversal direction in essence perpendicular to the length direction of the reinforcement profile. This is advantageous as it prevents a reinforcement profile attached to the basis profile to slide in the length direction. Preferably, both end portions of basis and reinforcement profiles comprise a multitude of transversal fixation holes. Optionally, transversal fixation holes may be provided over the whole length of basis and reinforcement profiles.
In a preferred embodiment, the basis profile and the reinforcement profiles are adapted for attaching a reinforcement profile to the basis profile when part of a build-up tent framework, without detachment of the basis profile from the build-up tent framework. In this case, a build-up tent framework comprising said basis profile is provided, and the reinforcement profile is attached longitudinally, externally and removably to said basis profile of the build-up tent framework, thereby obtaining an attached configuration in which the reinforcement wall is spaced from the basis profile.
In a preferred embodiment of the method, the basis profile comprises one or more longitudinal connection recesses and the tangent wall of the reinforcement profile comprises one or more longitudinal connection protrusions. In this case, the step of longitudinally, externally and removably attaching the reinforcement profile to the basis profile comprises sliding according to the length direction of the reinforcement profile the connection protrusions of the reinforcement profile in connection recesses of the basis profile, thereby obtaining a reinforcement profile hooked externally to the basis profile via the connection protrusions.
The invention is further described by the following non-limiting examples which further illustrate the invention, and are not intended to, nor should they be interpreted to, limit the scope of the invention.

Examples

Embodiments of basis profiles

Figure 1 shows a cross section of an embodiment of a basis profile (1a) according to the present invention. The basis profile is an extruded aluminum profile comprising a length direction which coincides with the extrusion direction (both perpendicular to the two-dimensional cross-sectional image plane of Figure 1). The basis profile comprises an in essence rectangular cross section perpendicular to the length direction. Preferably, the basis profile comprises an in essence square and in essence four-fold rotationally symmetric cross section. The basis profile comprises an outer wall (2) comprising four outer wall segments. The outer wall comprises eight connection recesses (3, 7). Thereby, each of the four outer wall segments comprises two of the connection recesses. A connection recess is an in essence cylindrical cavity (3) extending in the length direction, provided with a mouth (7) extending in the length direction. Preferably, a connection recess is a Keder rail extending in the length direction.
Figure 2 shows a cross section of an embodiment of a basis profile (1b) according to the present invention. The basis profile further (in addition to the above-disclosed features shown in Figure 1) comprises a T-shaped attachment recess (4, 5) extending in the length direction. The T-shaped attachment recess comprises a mouth (5) and a rectangular cavity (4), both extending in the length direction. Preferably, each of the four outer wall segments comprises a T-shaped attachment recess. Preferably, a T-shaped attachment recess of an outer wall segment is positioned in between the two connection recesses of the outer wall segment. Again, the basis profile comprises an in essence square and in essence four-fold rotationally symmetric cross section.
Figure 3 shows a cross section of an embodiment of a basis profile (1c) according to the present invention. The basis profile further (in addition to the above-disclosed features shown in Figure 2) comprises internal ribs (6) for strengthening and water drainage. The basis profile may comprise four internal ribs, each of which may interconnect walls of two different T-shaped attachment recesses. Again, the basis profile comprises an in essence four-fold rotationally symmetric cross section.
The basis profile comprises two end portions spaced along the length direction. Each of the end portions comprises a plurality of fixation layers spaced in the length direction and each comprising a plurality of transversal fixation holes, for relative fixation of a reinforcement profile to the basis profile by means of an elongated connection member.

Embodiments of reinforcement profiles

Figure 4 shows a cross section of an embodiment of a reinforcement profile (11a) according to the present invention. The reinforcement profile is an extruded aluminum profile comprising a length direction which coincides with the extrusion direction (both perpendicular to the two-dimensional cross-sectional image plane of Figure 4). The reinforcement profile comprises a tangent wall (19), support walls (16) and a reinforcement wall (12). The tangent, support and reinforcement walls are parallel to the length direction. The reinforcement wall is spaced from the tangent wall by the support walls and an internal air gap. The tangent wall comprises two mutually in essence perpendicular wall segments (19). Each of the wall segments comprises a connection protrusion (13, 18). A connection protrusion comprises an in essence cylindrical head (13) extending in the length direction, supported by a neck (18) extending in the length direction. Preferably, a connection protrusion is a Keder protrusion. The reinforcement wall comprises two mutually in essence perpendicular reinforcement wall segments.
Figures 5 and 6 show cross sections of embodiments of reinforcement profiles (11b, 11c) according to the present invention. The reinforcement wall of the reinforcement profile further (in addition to the above-disclosed features shown in Figure 4) comprises two connection recesses (14). Preferably, each of the reinforcement wall segments comprises one of the two connection recesses. The connection recesses may (Figure 5) or may not (Figure 6) be aligned with the connection protrusions along a direction perpendicular to the corresponding wall segment of the tangent wall.
Figure 7 shows a cross section of an embodiment of a reinforcement profile (11d) according to the present invention. The reinforcement profile further (in addition to the above-disclosed features shown in Figure 5 or 6) comprises one or more internal support walls.
The reinforcement profile comprises two end portions spaced along the length direction. Each of the end portions comprises a plurality of fixation layers spaced in the length direction and each comprising a plurality of transversal fixation holes, for relative fixation of the reinforcement profile to a basis profile by means of an elongated connection member. The reinforcement and tangent walls may thereby comprise a multitude of corresponding pairs of fixation holes. The reinforcement profile may further comprise a cylindrical wall connector (15) coupling the two fixation holes of a corresponding pair, thereby also provided additional support for spacing the reinforcement and tangent wall.

Embodiment of a modular construction system

Figure 8 shows a cross section of an embodiment of a modular construction system according to the present invention. The system comprises a basis profile as illustrated in any one of Figures 1, 2 and 3 and four reinforcement profiles as illustrated in any one of Figures 4, 5, 6 and 7. The two connection protrusions (13, 18) of a reinforcement profile are adapted to hook and slide in corresponding connection recesses (3, 7) of the basis profile, thereby attaching the reinforcement profile longitudinally, externally and removably to the basis profile. The cylindrical head (13) is thereby positioned inside the cylindrical cavity (3). The neck (18) supporting the cylindrical head thereby passes through the mouth (7). A reinforcement profile externally attached to the basis profile comprises a reinforcement wall spaced from the basis profile. Each of the two wall segments of the tangent wall of a reinforcement profile is in contact with the basis profile.
The transversal fixation holes of the fixation layers of the basis and reinforcement profiles correspond, for relative fixation of a reinforcement profile and the basis profile by means of an elongated connection member.
Figure 9 shows a perspective view of an embodiment of a modular construction system according to the present invention. The system comprises a basis profile as illustrated in any one of Figures 2 and 3 and four reinforcement profiles as illustrated in Figure 7. A reinforcement profile comprises corresponding pairs of fixation holes (21) and cylindrical wall connectors (15) coupling fixation holes of corresponding pairs in the reinforcement and tangent walls. The basis profile comprises fixation holes (22) in its outer wall (2) as well as fixation holes (23) in the T-shaped attachment recesses. An in essence straight elongated connection member may thereby pass through a corresponding pair of fixation holes of a first reinforcement profile, a first fixation hole in the outer wall of the basis profile, a pair of fixation holes in a T-shaped attachment recess (23), a second fixation hole in the outer wall of the basis profile, and a corresponding pair of fixation holes of a second reinforcement profile. Axis (20) illustrates a possible passageway for such a straight elongated connection member, e.g. a bolt.
Preferably, each end portion of the basis and reinforcement profiles comprises a multitude of fixation layers spaced in the length direction. Each fixation layer comprises a plurality of transversal fixation holes for insertion of elongated connection members in essence perpendicular to the length direction. Preferably, each end portion comprises at least three, more preferably at least four, even more preferably at least five fixation layers, such as five or six fixation layers.
Figure 10 shows a perspective view of an embodiment of (part of) a tent framework according to the present invention, in which two transversal basis profiles (1', 1") are attached perpendicularly to a reinforced first basis profile (1) via connector pieces (30, 30'). A connector piece may be removably attached to a basis profile, e.g. via bolts and nuts, or may alternatively be permanently attached to a basis profile, e.g. via welding. Preferably, a connector piece can be removably attached to a basis profile. A connector piece comprises a length direction, a sliding direction and a transversal direction, which are mutually perpendicular. The connector piece furthermore comprises a T-shaped protrusion extending in the sliding direction for hooking and sliding in a T-shaped attachment recess of the first basis profile (1). The T-shaped protrusion comprises fixation holes along the transversal direction corresponding to the fixation holes in the T-shaped attachment recess of the first basis profile. In this case, an in essence straight elongated connection member may according to the transversal direction of the connector piece be inserted through a corresponding pair of fixation holes of a first reinforcement profile, a first fixation hole in the outer wall of the first basis profile, a pair of fixation holes in a T-shaped attachment recess of the first basis profile, the corresponding fixation holes of the T-shaped protrusion of the connector piece, a second fixation hole in the outer wall of the first basis profile, and a corresponding pair of fixation holes of a second reinforcement profile, as indicated by axis (20) in Figure 10. The connector piece furthermore comprises a base for insertion in an end portion of a transversal basis profile according to the length directions of the transversal basis profile and the connector piece, whereby the base is likewise provided with a plurality of fixation holes corresponding to the transversal fixation holes of the end portion of the transversal basis profile. The base can then be fixated relative to the transversal basis profile by insertion of one or more elongated connection members along insertion axes (20', 20") perpendicular to the length directions of the connector piece and of the transversal basis profile. Thereby, reinforcement profiles may or may not be removably attached to said transversal basis profile.
One of ordinary skill in the art will appreciate that in the latter case, corresponding to Figure 10, the modular construction system comprises a plurality of basis profiles, a plurality of reinforcement profiles, a plurality of connector pieces, and a plurality of elongated connection members. All features as disclosed above, in the detailed description and/or examples, in relation to one or more of these components (basis profile, reinforcement profile, connector piece, elongated connection member) may also pertain to the modular construction system of this paragraph.

Claims

Modular construction system for a tent, comprising a basis profile (1) and one or more reinforcement profiles (11), the system adapted to longitudinally, externally and removably attach the reinforcement profiles to the basis profile, whereby a reinforcement profile and the basis profile comprise an attached configuration in which the reinforcement profile comprises a reinforcement wall (12) spaced from the basis profile.
Modular construction system according to any one of the preceding claims, wherein a reinforcement profile comprises a tangent wall, support walls and a reinforcement wall spaced from the tangent wall by an air gap and said support walls, whereby in said attached configuration the tangent wall of the reinforcement profile is in contact with the basis profile and the support walls space the reinforcement wall from the basis profile.
Modular construction system according to any one of the preceding claims, wherein in said attached configuration said reinforcement wall is spaced from the basis profile by a distance of at least 4 mm, preferably at least 6 mm, more preferably at least 8 mm, even more preferably at least 10 mm, yet even more preferably at least 12 mm, most preferably at least 14 mm, such as 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, or any value above or in between.
Modular construction system according to any one of the preceding claims, wherein the basis profile (1) comprises one or more, preferably multiple, longitudinal connection recesses (3) and wherein each reinforcement profile (11) comprises one or more, preferably at least two, longitudinal connection protrusions (13), each connection protrusion adapted to hook and slide in a connection recess of the basis profile.
Modular construction system according to preceding claim 4, wherein a connection recess (3) is an in essence cylindrical cavity provided with a mouth, and wherein a connection protrusion (13) comprises an in essence cylindrical head supported by a neck.
Modular construction system according to any one of preceding claims 4 and 5, wherein the reinforcement wall (12) of a reinforcement profile (11) also comprises a connection recess (14).
Modular construction system according to any one of the preceding claims, wherein each of the basis and reinforcement profiles comprises a multitude of transversal fixation holes for relative fixation of the basis profile and a reinforcement profile by means of an elongated connection member.
Modular construction system according to any one of the preceding claims, wherein the system comprises at least two, preferably at least three, and most preferably at least four reinforcement profiles.
Modular construction system according to any one of the preceding claims, wherein said basis profile comprises an in essence rectangular cross section.
Modular construction system according to preceding claims 2 and 9, wherein said tangent wall comprises two in essence perpendicular wall segments, whereby in said attached configuration both wall segments of the tangent wall are in contact with the basis profile.
Modular construction system according to any one of the preceding claims, wherein said basis profile is an extruded aluminum profile, and wherein said reinforcement profiles are extruded aluminum profiles.
Reinforcement profile for tent construction, comprising a length direction, a tangent wall, support walls and a reinforcement wall spaced from the tangent wall by an air gap and said support walls, whereby the tangent, support and reinforcement walls are in essence parallel to the length direction, and whereby the tangent wall comprises at least two longitudinal connection protrusions, preferably a connection protrusion being an in essence cylindrical head supported by a longitudinal neck.
Reinforcement profile according to preceding claim 12, wherein the tangent wall comprises two mutually in essence perpendicular wall segments, each comprising at least one of said connection protrusions, preferably the reinforcement wall comprising one or more longitudinal in essence cylindrical cavities each comprising a longitudinal mouth.
Method for tent construction, comprising the steps of:
- providing a basis profile;

- providing a reinforcement profile comprising a length direction, a tangent wall, support walls and a reinforcement wall spaced from the tangent wall by an air gap and said support walls, whereby the tangent, support and reinforcement walls are in essence parallel to the length direction; and

- longitudinally, externally and removably attaching the reinforcement profile to the basis profile, thereby obtaining an attached configuration in which the reinforcement wall is spaced from the basis profile.
Method according to preceding claim 14, comprising the steps of:
- providing a build-up tent framework comprising said basis profile; and

- longitudinally, externally and removably attaching the reinforcement profile to said basis profile of the build-up tent framework, thereby obtaining an attached configuration in which the reinforcement wall is spaced from the basis profile.